Columbia University 



SUMMER SESSION' JULY ; . AUG' 18, 1909 



One hundred and sixty-five courses will be offered. There will be many course 

 the sciences. The following are of special interest to students of nature study: Botany i — 

 Nature and Development of Plants, 2 — Plant Physiology. Zoology — Elementary Biology 

 and Zoology. 



Tuition fee $30.00. Reduced railroad rates. 



For the Announcement of the Summer Session, address 



Secretary of Columbia University. New York City 



The Biological Laboratory 



of the Brooklyn Institute of Arts and Sciences, located at Cold Spring Harbor, Long 

 Island. N. V.. otters courses in Field Zoology, Bird Study, Comparative Anatomy and 

 Embryology of Animals, Plant Ecology and Cryptogamic Botany during :>i.\ weeks be- 

 ginning July 7. Work done here accepted towards a degree in colleges. 



Well equipped laboratory, but much of the work is done out-of-doors where observa- 

 tions can be carried on throughout the day. Varied environments : sea, brooks, lakes 

 and land. Fireproof dormitory for women with hot and cold water and sewerage system 

 Two dormitories for men. Fine sea bathing. Boarding arrangements on a co-operative 

 basis. For further information and announcement, addi 



C. B. Davenport, Cold Spring Harbor, Long Island, N. Y. 



The Nature-Study Review 



AND 



TORREYA 



Special combined price ^1.50 for the year 1909 

 Regular price Si. 00 each 



This special offer is good only as long as the publishers of the above 

 journals can supply back numbers of early 1909 issues. In no case will the 

 subscription be extended beyond December of this year. The offer is limited 

 to new subscribers of either journal and the combined pric 5 to mem 



bers of the American Nature-Study Society. 



Torreya is a monthly journal of botany. If you do not know it, write for 

 a sample copy. 



Address orders to 



Secretary of the A. N.-S. S. , 



525 W 120 St., New York City. 



